I called today prematurely (usually make the call beginning of August) because I was having some issues with my HBO On Demand and my satellite reception. I very politely explained my concerns to the first CS agent, and asked them to connect me to speak to someone about cancellation. Turns out, I only have 5 months left on my contract, so I knew I had some leverage. I was connected immediately with customer retention, a very friendly young lady, and again explained my concerns.
Anyway, she asked me if there was anything they could do to keep me as a customer. I've been a subscriber since 2005. I told her that I didn't want to extend my contract, and with that in mind, I would be willing to listen to offers for credits/discounts.
She gave me a $15 credit off my bill for 15 months, free HBO for 12 months, and Sunday Ticket Max for free this year ($675 total discounts). Additionally, they are sending out a technician (for free) to look at my satellite and other hardware to make sure everything is functioning properly.
I feel good about this.